Self-cleaning dust cylinder assembly and hand-held vacuum cleaner with the same

ABSTRACT

A self-cleaning dust cylinder assembly, including a dust collection assembly, a filter and a cleaning assembly. The dust collection assembly includes a dust collection cylinder, the upper end of the dust collection cylinder is provided with an opening, and the lower end of the dust collection cylinder is provided with a dust suction port. The filter inlet side of the filter is located above the dust suction port, and the filter outlet side is connected to the opening of the dust collection cylinder. The cleaning assembly includes a cleaning brush, and the cleaning brush is installed in the dust collection cylinder and cleans the filter with the movement of the dust collection cylinder, so as to clean the dust stains and other garbage attached on the filter into the dust collection cylinder.

CROSS REFERENCE TO RELATED DISCLOSURE

This disclosure claims priority benefit of Chinese Patent disclosure No. CN202011389518.0, filed on Dec. 1, 2020, and the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the technical field of vacuum cleaner, in particular to a self-cleaning dust cylinder assembly and a hand-held vacuum cleaner with the same.

BACKGROUND

With the rapid development of small household appliances technology and the continuous improvement of people's living standards, hand-held vacuum cleaners can be used in many places where common vacuum cleaners are difficult to work or the place where needs targeted cleaning. It has gradually become one of the necessary electric appliances in people's daily life.

In the existing hand-held vacuum cleaners in the market, dust stains and other garbage are filtered through the dust collector or the primary small hole filter (metal mesh or original plastic hole, etc.) or HEPA filter of H11-H13 under the suction of BLDC motor. After that, the garbage and dust are left in the dust collector, and the clean air flows to BLDC motor and is discharged.

The filter in the dust collector needs to be taken out regularly for cleaning, so as to ensure the filtering effect of the filter, so as to ensure the working efficiency and dust collection effect of the vacuum cleaner. Most of the filters in the traditional hand-held dust collector are not detachable, and the filter screen can only be cleaned simply by tools, which is not only troublesome, but also poor in cleaning effect. Although there are a few filter of the vacuum cleaners with detachable structure at present, such as the dust cylinder with application number 202010266700.0 and the name of a dust cylinder with detachable filter screen for hand-held vacuum cleaner. However, the way of cleaning the filter after disassembly is not only inefficient and troublesome, but also the dust stains and other garbage attached to the filter after disassembly will directly contact with users, which greatly reduces the user experience. Therefore, how to improve the cleaning of the filter in the dust collection cylinder to achieve high cleaning efficiency and convenient operation is a technical problem to be solved by those skilled in the art.

SUMMARY

The objective of the present disclosure is to provide a self-cleaning dust cylinder assembly and a hand-held vacuum cleaner with the self-cleaning dust cylinder assembly, which not only has high cleaning efficiency and convenient operation for the filter, but also can improve the user's use experience.

To achieve the above objective, the present disclosure adopts the following technical solution:

A self-cleaning dust cylinder assembly, including a dust collection assembly, a filter and a cleaning assembly. The dust collection assembly includes a dust collection cylinder, an upper end of the dust collection cylinder is provided with an opening, and a lower end of the dust collection cylinder is provided with a dust suction port. A filter inlet side of the filter is located above the dust suction port and the filter outlet side is connected to the opening of the dust collection cylinder. The cleaning assembly includes a cleaning brush, wherein the cleaning brush is installed in the dust collection cylinder and cleans the filter with a movement of the dust collection cylinder.

Further, the filter includes a filter screen assembly and a HEPA filter assembly, the filter screen assembly is connected to the opening of the dust collection cylinder; the HEPA filter assembly is fixed in the filter screen assembly.

Further, the cleaning assembly further includes a first mounting ring, the first mounting ring is detachably arranged on an inner wall of the opening of the dust collection cylinder, the cleaning brush is arranged circumferentially along an inner wall of the first mounting ring, and the filter screen assembly is connected to a top of the first mounting ring.

Further, an outer wall of the first mounting ring is respectively provided with a positioning strip and a plurality of first snapping blocks, an inner wall of the dust collection cylinder is respectively provided with a positioning notch corresponding to the positioning strip and a first snapping opening corresponding to and the first snapping block; the positioning strip is matched with the positioning notch, and the first snapping block is snapped with the first snapping opening.

Further, the dust collection assembly further includes a cylinder door and a switch, the dust collection cylinder is provided with a dust discharge port above the dust suction port, the cylinder door is hinged on the dust collection cylinder for sealing the dust discharge port, and the switch provided on the dust collection cylinder is configured to lock the cylinder door.

Further, a lower end of the cylinder door is hinged on the dust collection cylinder through a rotating shaft, an upper end of the cylinder door is provided with a first hooking portion, the dust collection cylinder is provided with an installation opening above the dust discharge port, the switch is arranged in the installation opening, a spring is arranged between the switch and a top of the installation opening, a lower end of the switch is provided with a second hooking portion, and the second hooking portion is hooked with the first hooking portion under an action of the spring to lock the cylinder door.

Further, the dust collection assembly further includes a baffle plate, the dust suction port extends into an interior of the dust collection cylinder to form an extending portion, and an insertion gap is formed between the extending portion and the inner side wall of the dust collection cylinder; the baffle plate is L shaped, one side of the baffle plate is inserted in the insertion gap, the other side is above the dust suction port, and a gap is formed between the baffle plate and the dust suction port.

A hand-held vacuum cleaner, including a vacuum cleaner component, a dust collection assembly according to claim 1, a filter and a cleaning assembly; the vacuum cleaner component is detachably connected to the opening end of the dust collection cylinder, and an air flow passage is formed between the dust suction port of the dust collection cylinder, the filter and the vacuum cleaner component.

Further, the vacuum cleaner component and the dust collection cylinder are connected by a rotary snapping structure, the filter screen assembly includes a second mounting ring and a the primary filter screen, wherein the primary filter screen is arranged on the second mounting ring; and the filter further includes a press ring; after the vacuum cleaner component is snapped connected with the dust collection cylinder, the second mounting ring is pressed against a top of the first mounting ring through the press ring.

Further, the vacuum cleaner component includes a casing, a bracket and a dust collector main body, the bracket is fixed in the casing, the dust collector main body is provided on the bracket, the casing and the bracket are provided with an exhaust port, side walls of the casing and the bracket are provided with a second snapping block and a third snapping block, respectively; an inner wall of the dust collection cylinder is provided with a second snapping opening corresponding to the second snapping block, an inner wall of the second mounting ring is provided with a third snapping opening corresponding to the third snapping block, the second snapping opening and the third snapping opening are L shaped, the second snapping block and the third snapping block are respectively snapped with the second snapping opening and the third snapping opening.

After adopting the above technical solution, the present disclosure has the following advantages compared with the background technology:

-   1. The present disclosure is provided with a cleaning brush at the     opening end of the dust collection cylinder. The cleaning brush     cleans the filter during the movement of the dust collection     cylinder, so as to clean the dust stains and other garbage attached     on the filter into the dust collection cylinder. The cleaning     efficiency of the filter of the vacuum cleaner is high and the     operation is convenient, and the dust stains and other garbage     attached on the filter can be avoided to directly contact with the     user, thus improving the cleaning efficiency user's experience. -   2. In the present disclosure, the cleaning assembly is installed in     the dust collection cylinder by snap-fit, and the vacuum cleaner     component and the dust collection cylinder are connected by a     rotatory clamping structure, so that the operation of removing and     installing the filter after removing is very convenient. -   3. In the present disclosure, a dust discharge port is arranged     above the dust suction port of the dust collection cylinder, the     dust discharge port is closed by a cylinder door hinged on the dust     collection cylinder, and the cylinder door is locked by a switch     arranged on the dust collection cylinder, so as to facilitate to     unload the dust, sundries and other garbage in the dust collection     cylinder.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic perspective view of the first embodiment;

FIG. 2 is an exploded view of the first embodiment;

FIG. 3 is a sectional view of the dust collection cylinder in the first embodiment;

FIG. 4 is a sectional view of the first embodiment;

FIG. 5 is an enlarged partial view of FIG. 4;

FIG. 6 is a schematic perspective view of the filter and cleaning assembly in the first embodiment;

FIG. 7 is an exploded view of FIG. 6;

FIG. 8 is a schematic perspective view of the second embodiment;

FIG. 9 is an exploded view of the second embodiment;

FIG. 10 is an enlarged partial view which shows the position A in FIG. 9.

Marks in Drawings

100-vacuum cleaner component; 110-casing; 111-the second snapping block; 1111-the first depressed portion; 120-bracket; 121-the third snapping block; 1211-the second depressed portion; 130-dust collector main body; 140-exhaust port;

200-dust collection assembly; 210-dust collection cylinder; 211-dust suction port; 212-dust discharge port; 213-extending portion; 214-insertion gap; 215-installation opening; 216-positioning notch; 217-the first snapping opening; 218-the second snapping opening; 219-the first protrusion; 220-cylinder door; 221-the first hooking portion; 230-switch; 231-spring; 232-the second hooking portion; 240-baffle plate; 250-rotating shaft;

300-filter; 310-filter screen assembly; 311-the second mounting ring; 3111-the third snapping opening; 3112-the second protrusion; 312-the primary filter screen; 320-HEPA filter assembly; 330-press ring;

400-cleaning assembly; 410-cleaning brush; 420-the first mounting ring; 421-positioning strip; 422-the first snapping block.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the objective, technical solution and advantages of the present disclosure clearer, the present disclosure will be further described in detail in combination with the drawings and the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

In the present disclosure, it should be noted that the terms “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element of the present disclosure must have a specific orientation, so it cannot be understood as a limitation of the present disclosure.

Embodiment 1

As shown in FIG. 1 and FIG. 2, this embodiment discloses a self-cleaning dust cylinder assembly, which includes a dust collection assembly 200, a filter 300 and a cleaning assembly 400.

As shown in FIG. 1 to FIG. 5, the dust collection assembly 200 includes a dust collection cylinder 210. The upper end of the dust collection cylinder 210 is provided with an opening, and the lower end of the dust collection cylinder 210 is provided with a dust suction port 211. The dust collection assembly 200 further includes a cylinder door 220 and a switch 230, the dust collection cylinder 210 is provided with a dust discharge port 212 above the dust suction port 211. The cylinder door 220 is hinged on the dust collection cylinder 210 for sealing the dust discharge port 212, and the switch 230 provided on the dust collection cylinder 210 is configured to lock the cylinder door.

The dust collection assembly 200 further includes a baffle plate 240. The dust suction port 211 extends into the interior of the dust collection cylinder 210 to form an extending portion 213, and an insertion gap 214 is formed between the extending portion 213 and the inner side wall of the dust collection cylinder 210. The baffle plate 240 is L shaped, one side of the baffle plate 240 is inserted in the insertion gap 214, the other side is above the dust suction port 211, and a gap is formed between the baffle plate 240 and the dust suction port 211. The baffle plate 240 can not only block the oversized particles from entering the dust collection cylinder 210 to avoid affecting the normal use of the dust collection assembly 200, but also can collect the dust and other debris to prevent the dust and other debris from falling from the dust suction port 211.

The lower end of the cylinder door 220 is hinged on the dust collection cylinder 210 through a rotating shaft 250, and the upper end of the cylinder door 220 is provided with a first hooking portion 221. The dust collection cylinder 210 is provided with an installation opening 215 above the dust discharge port 212, and the switch 230 is arranged in the installation opening 215. A spring 231 is arranged between the switch 230 and the top of the installation opening 215. The lower end of the switch 230 is provided with a second hooking portion 232, and the second hooking portion 232 is hooked with the first hooking portion 221 under the action of the spring 231 to lock the cylinder door 220. When the cylinder door 220 needs to be opened, the switch 230 is moved upward to release the hooking state of the second hooking portion 232 and the first hooking portion 221, so that the cylinder door 220 can be opened outwards around the rotating shaft 250. Through the setting of the cylinder door 220, it is convenient to pour out the dust, sundries and other garbage in the dust collection cylinder 210.

As shown in FIG. 2 to FIG. 4, FIG. 6 and FIG. 7, a filter inlet side of the filter 300 is located above the dust suction port 211 and the filter outlet side is connected to the opening of the dust collection cylinder 210. The filter 300 further includes a filter screen assembly 310 and a HEPA filter assembly 320. The filter screen assembly 310 is connected to the opening of the dust collection cylinder 210, and the HEPA filter assembly 320 is fixed in the filter screen assembly 310. The filter assembly 310 can filter the large particles of dust and other impurities, and the HEPA filter assembly 320 can further filter the small particles of dust mixed in the air flow.

The cleaning assembly 400 includes a cleaning brush 410, wherein the cleaning brush 410 is installed in the dust collection cylinder 210 and cleans the filter 300 with the movement of the dust collection cylinder 210. The cleaning assembly 400 includes a first mounting ring 420, and the first mounting ring 420 is detachably arranged on the inner wall of the opening of the dust collection cylinder 210. The cleaning brush 410 is arranged circumferentially along the inner wall of the first mounting ring 420, and the filter screen assembly 310 is connected to the top of the first mounting ring 420. When the filter 300 moves outward relative to the cleaning brush 410, the cleaning brush 410 cleans the filter screen assembly 310 and HEPA filter assembly 320, and sweeps the dust stains and other garbage attached on the filter screen assembly 310 and HEPA filter assembly 320 into the dust collection cylinder 210.

In the present embodiment, the outer wall of the first mounting ring 420 is respectively provided with a positioning strip 421 and a plurality of first snapping blocks 422. The inner wall of the dust collection cylinder 210 is respectively provided with a positioning notch 216 corresponding to the positioning strip 421 and a first snapping opening 217 corresponding to and the first snapping block 422. The positioning strip 421 is matched with the positioning notch 216, and the first snapping block 422 is snapped with the first snapping opening 217.

Embodiment 2

As shown in FIG. 2, FIG. 7 and FIG. 9, A hand-held vacuum cleaner is further provided by the present embodiment, including a vacuum cleaner component 100, a dust collection assembly 200, a filter 300 and a cleaning assembly 400 which are described above. The vacuum cleaner component 100 is detachably connected to the opening end of the dust collection cylinder 210, and an air flow passage is formed between the dust suction port 211 of the dust collection cylinder 210, the filter 300 and the vacuum cleaner component 100.

The vacuum cleaner component 100 and the dust collection cylinder 210 are connected by a rotary snapping structure. The filter screen assembly 310 includes a second mounting ring 311 and a the primary filter screen 312, wherein the primary filter screen 312 is arranged on the second mounting ring 311. The filter 300 further includes a press ring 330. After the vacuum cleaner component 100 is snapped connected with the dust collection cylinder 210, the second mounting ring 311 is pressed against the top of the first mounting ring 420 through the press ring 330.

As shown in FIG. 3, FIG. 7, FIG. 9 and FIG. 10, the vacuum cleaner component 100 includes a casing 110, a bracket 120 and a dust collector main body 130. The bracket 120 is fixed in the casing 110, and the dust collector main body 130 is provided on the bracket 120. The casing 110 and the bracket 120 are provided with an exhaust port 140. After passing through the dust suction port 211, the filter 300, the bracket 120 and the casing 110, the air flow is discharged from the exhaust port 140. The dust collector main body 130 includes a suction motor, a power supply device and other components, which can adopt the prior art. Therefore, in this embodiment, the specific structure of the dust collector main body 130 is not described in detail for brevity.

Side walls of the casing 110 and the bracket 120 are provided with a second snapping block 11 and a third snapping block 121, respectively. The inner wall of the dust collection cylinder 210 is provided with a second snapping opening 218 corresponding to the second snapping block 111, and the inner wall of the second mounting ring 311 is provided with a third snapping opening 3111 corresponding to the third snapping block 121. The second snapping opening 218 and the third snapping opening 3111 are L shaped. The second snapping block 111 and the third snapping block 121 are respectively snapped with the second snapping opening 218 and the third snapping opening 3111. The casing 110 and the bracket 120 are connected by a rotatory clamping structure, so that the operation of removing and installing the filter 300 after removing is very convenient.

In this embodiment, the first depressed portion 1111 and the second depressed portion 1211 with vertical shape are formed in the second snapping block 111 and the third snapping block 121, respectively. And the first depressed portion 1111 and the second depressed portion 1211 have smooth transition with the second snapping block 111 and the third snapping block 121, respectively. A vertical first protrusion 219 and a second protrusion 3112 are formed in the second snapping opening 218 and the third snapping opening 3111, and the first protrusion 219 and the second protrusion 3112 are arc-shaped. When the second snapping block 111 and the third snapping block 121 are respectively snapped with the second snapping opening 218 and the third snapping opening 3111, the first depressed portion 1111 and the second depressed portion 1211 are respectively snapped with the first protrusion 219 and the second protrusion 3112, so as to avoid the separation of the vacuum cleaner component 100 under the action of light external rotating force, which will affecting the normal use of the vacuum cleaner.

The above is only a preferred specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited to this. Any modification or substitution that can be easily thought of by a skilled person in the art within the technical scope of the present disclosure shall be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the scope of the claims. 

What is claimed is:
 1. A self-cleaning dust cylinder assembly, comprising a dust collection assembly, a filter and a cleaning assembly; the dust collection assembly comprises a dust collection cylinder, an upper end of the dust collection cylinder is provided with an opening, and a lower end of the dust collection cylinder is provided with a dust suction port; a filter inlet side of the filter is located above the dust suction port and the filter outlet side is connected to the opening of the dust collection cylinder; the cleaning assembly comprises a cleaning brush, wherein the cleaning brush is installed in the dust collection cylinder and cleans the filter with a movement of the dust collection cylinder.
 2. The self-cleaning dust cylinder assembly according to claim 1, wherein the filter comprises a filter screen assembly and a HEPA filter assembly, the filter screen assembly is connected to the opening of the dust collection cylinder; the HEPA filter assembly is fixed in the filter screen assembly.
 3. The self-cleaning dust cylinder assembly according to claim 2, wherein the cleaning assembly further comprises a first mounting ring, the first mounting ring is detachably arranged on an inner wall of the opening of the dust collection cylinder, the cleaning brush is arranged circumferentially along an inner wall of the first mounting ring, and the filter screen assembly is connected to a top of the first mounting ring.
 4. The self-cleaning dust cylinder assembly according to claim 3, wherein an outer wall of the first mounting ring is respectively provided with a positioning strip and a plurality of first snapping blocks, an inner wall of the dust collection cylinder is respectively provided with a positioning notch corresponding to the positioning strip and a first snapping opening corresponding to and the first snapping block; the positioning strip is matched with the positioning notch, and the first snapping block is snapped with the first snapping opening.
 5. The self-cleaning dust cylinder assembly according to claim 1, wherein the dust collection assembly further comprises a cylinder door and a switch, the dust collection cylinder is provided with a dust discharge port above the dust suction port, the cylinder door is hinged on the dust collection cylinder for sealing the dust discharge port, and the switch provided on the dust collection cylinder is configured to lock the cylinder door.
 6. The self-cleaning dust cylinder assembly according to claim 5, wherein a lower end of the cylinder door is hinged on the dust collection cylinder through a rotating shaft, an upper end of the cylinder door is provided with a first hooking portion, the dust collection cylinder is provided with an installation opening above the dust discharge port, the switch is arranged in the installation opening, a spring is arranged between the switch and a top of the installation opening, a lower end of the switch is provided with a second hooking portion, and the second hooking portion is hooked with the first hooking portion under an action of the spring to lock the cylinder door.
 7. The self-cleaning dust cylinder assembly according to claim 1, wherein the dust collection assembly further comprises a baffle plate, the dust suction port extends into an interior of the dust collection cylinder to form an extending portion, and an insertion gap is formed between the extending portion and the inner side wall of the dust collection cylinder; the baffle plate is L shaped, one side of the baffle plate is inserted in the insertion gap, the other side is above the dust suction port, and a gap is formed between the baffle plate and the dust suction port.
 8. A hand-held vacuum cleaner, comprising a vacuum cleaner component, a dust collection assembly according to claim 1, a filter and a cleaning assembly; the vacuum cleaner component is detachably connected to the opening of the dust collection cylinder, and an air flow passage is formed between the dust suction port of the dust collection cylinder, the filter and the vacuum cleaner component.
 9. The hand-held vacuum cleaner according to claim 8, wherein the vacuum cleaner component and the dust collection cylinder are connected by a rotary snapping structure, the filter screen assembly comprises a second mounting ring and a the primary filter screen, wherein the primary filter screen is arranged on the second mounting ring; and the filter further comprises a press ring; after the vacuum cleaner component is snapped connected with the dust collection cylinder, the second mounting ring is pressed against a top of the first mounting ring through the press ring.
 10. The hand-held vacuum cleaner according to claim 9, wherein the vacuum cleaner component comprises a casing, a bracket and a dust collector main body, the bracket is fixed in the casing, the dust collector main body is provided on the bracket, the casing and the bracket are provided with an exhaust port, side walls of the casing and the bracket are provided with a second snapping block and a third snapping block, respectively; an inner wall of the dust collection cylinder is provided with a second snapping opening corresponding to the second snapping block, an inner wall of the second mounting ring is provided with a third snapping opening corresponding to the third snapping block, the second snapping opening and the third snapping opening are L shaped, the second snapping block and the third snapping block are respectively snapped with the second snapping opening and the third snapping opening. 